Birney, Robert Charles, 1925- Reinforcement, an enduring problem in psychology; selected readin gs. Edited by Robert C. Birney and Richard C. Teevan. - Princeton, N.J., Van Nostrand, 1961. - 230 p. : ill.; 18 cm. - An Insight book, 3 . Includes bibliography. Subjects--Topical Terms: Reinforcement (Psychology) Dewey Class. No.: 154.4